SAT Question 04ad68ca: Transitions answer and explanation

Choice A is incorrect because “similarly” illogically signals that the thinner, higher walls in this sentence are similar to the invention of flying buttresses in the previous sentence. Instead, the walls were a result of that invention.

Choice B is incorrect because “for instance” illogically signals that the thinner, higher walls in this sentence are an example supporting the statement about the invention of flying buttresses in the previous sentence. Instead, the walls were a result of that invention.

Choice C is incorrect because “nevertheless” illogically signals that the thinner, higher walls in this sentence occurred despite the invention of flying buttresses in the previous sentence. Instead, the walls were a result of that invention.